somratp

I guess 2(4-1)^2 /23-2=? 2^9 / 2 = 2^8 Noted that 9 is from (4-1)^2

I love your explaination 800Bob's explaination. Concise and Clear =) Thank you

Sorry if this is a late discussion but just in case that anyone accidentally read this discussion. To build on what haneen97 said, I agree with you partly. You are right that B is correct. But it is "global forest fires" that contributed to the extinction. Other than that, you are correct.

love that explaination, 800Bob. Thanks